Jay - Had an interesting thought,..........because this type manifold has more mass (more cast iron) than a normal stock Model T manifold, do you suppose they have less of a tendency to warp? Anybody ever run across a warped one? Just wondering,..........harold

I have them on two of my cars and neither one has ever warped. I had a chance to buy another at a swap meet awhile back that they were just about giving it away because the threads were bad. Later I could have kicked myself because I have about 10 exhaust manifolds with good threads that I could have cut off and installed on the heater manifold. Live and Learn?

Both of my 26 T's have a 2-1/2" or 3" hole cut in the firewall in line with the exhaust manifold. I have seen these heater manifolds before but have never seen the shroud. Pictures would be greatly appreciated.

The Arvin is very much like the first photo in the other thread. I have one on the Hack (oxymoron since the Hack has no curtains, but it came that way and had nibbled the firewall and floorboards for the grate piece)

Someone approached me one time about reproducing the Arvin since it was all sheet metal and I made up some drawings and sent them to him. He never reproduced, but if someone were to want to make one themselves, I'm sure I could find the sketches and dimensions with some digging.

If anybody is making the shroud for one of those finned cast manifolds, I sure would like to get contact info. Realize it is nothing but sheet metal but a correct fit would save a lot of trouble. I have two heaters in use, both are the type that surround the exhaust pipe under the floor. They work very well and are absolutely free from carbon mox.

Jay - So glad you started this "Accessory of the Day" thread on the finned heater exhaust manifold Jay. After all of the above positive responses, I'm pretty convinced that these manifolds, due to the extra "mass" of cast iron as opposed to the stock Ford manifold, tend to resist warping, sort of like the Anco or Wilmo combination intake/exhaust manifolds. I have a Wilmo combination manifold (intake & exhaust are one-piece casting) on my '27 depot hack and that type manifold also tends to resist warping. Now I'm wondering if a properly fitted sheet metal shroud over the Wilmo combination manifold would capture enough heat to act somewhat as a heater type manifold. I think it would work, just not quite as well as the finned manifold as shown in the pictures above. I'm sure tempted to try to make a sheet metal shroud to fit over my Wilmo and try it. Anybody ever done anything like this?

Hey hey, unfortunatley I am at work for a few more days so I can't go home just yet but I will post back to this thread as soon as I do with pics.

The manifold I bead blasted to bare metal then coated with that ceramic based engine manifold paint. I did that after I preheated the manifold with a torch and applied the paint to it hot. Let me assure you, that silver color will be on there for YEARS if you apply that paint like this.

Jay - So glad you started this "Accessory of the Day" thread on the finned heater exhaust manifold Jay. After all of the above positive responses, I'm pretty convinced that these manifolds, due to the extra "mass" of cast iron as opposed to the stock Ford manifold, tend to resist warping, sort of like the Anco or Wilmo combination intake/exhaust manifolds. I have a Wilmo combination manifold (intake & exhaust are one-piece casting) on my '27 depot hack and that type manifold also tends to resist warping. Now I'm wondering if a properly fitted sheet metal shroud over the Wilmo combination manifold would capture enough heat to act somewhat as a heater type manifold. I think it would work, just not quite as well as the finned manifold as shown in the pictures above. I'm sure tempted to try to make a sheet metal shroud to fit over my Wilmo and try it. Anybody ever done anything like this?